It’s a simple little setup, usually hidden under your kitchen sink. Water goes through three main steps: first, a pre-filter catches big stuff like sand and rust. Then, the RO membrane does the heavy lifting, pushing water through microscopic pores that block contaminants down to the size of a virus.
Finally, a carbon filter polishes the taste. The whole process takes a few minutes per gallon, but most systems have a little storage tank so you never have to wait. It’s like having a personal water bottling plant on call 24/7.
Now, here’s the funny part: RO systems actually produce some “waste” water—the stuff with the contaminants in it. But don’t worry, it’s not a huge amount. And you can use that “waste” water to water your plants or wash your car. It’s still cleaner than most outdoor water.
Is it expensive? Spoiler: No.
You might think this sounds like a million-dollar gadget, but basic under-sink RO systems start around $100 to $200. Compare that to buying plastic water bottles every week—you’d save money in under six months. Plus, you help the planet by ditching all that single-use plastic.
Installation is often shockingly easy. Many systems come with a simple faucet and color-coded tubes that snap together like Lego. If you can use a screwdriver and a drill, you can probably install it yourself on a Saturday afternoon. If not, a plumber can do it in under an hour.
How Does An Industrial Ro System Work at Joan Leet blog